package com.hmall.common.interceptors;

import cn.hutool.core.util.StrUtil;
import com.hmall.common.utils.UserContext;
import org.springframework.web.servlet.HandlerInterceptor;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

public class UserInfoInterceptor implements HandlerInterceptor {

        @Override
        public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
            //1.获取登录用户信息
            String userInfo = request.getHeader("user-info");
            //2.判断是否获取到登录用户信息,如果有，放入Thread
            if ( StrUtil.isNotBlank(userInfo)) {
                UserContext.setUser(Long.valueOf(userInfo));
            }
            //3.放行
            return true;
        }

        @Override
        public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) throws Exception {
            //清理用户
            UserContext.removeUser();
            }
}
